moved release repositories to mirror.mirantis.com

Related: PROD-17108

Change-Id: I1167ad1e4823e2c9f91f15d4741fc48da19b8aec
diff --git a/linux/system/repo/mcp/apt_mirantis/fluentd.yml b/linux/system/repo/mcp/apt_mirantis/fluentd.yml
index 246d285..2bca860 100644
--- a/linux/system/repo/mcp/apt_mirantis/fluentd.yml
+++ b/linux/system/repo/mcp/apt_mirantis/fluentd.yml
@@ -8,9 +8,6 @@
         mcp_fluentd:
           source: "deb [arch=amd64] http://mirror.mirantis.com/${_param:linux_system_repo_mcp_fluentd_version}/td-agent-${_param:linux_system_codename} ${_param:linux_system_codename} contrib"
           architectures: amd64
-          key_url: "http://packages.treasuredata.com/GPG-KEY-td-agent"
+          key_id: 901F9177AB97ACBE
+          key_server: keyserver.ubuntu.com
           clean_file: true
-          pin:
-          - pin: 'release a=${_param:linux_system_repo_mcp_fluentd_version}'
-            priority: 1100
-            package: '*'